The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 22, 2010
Filed:
Mar. 21, 2006
Yoshikatsu Ichimura, Setagaya-ku, JP;
Yoshitaka Zaitsu, Kawasaki, JP;
Takashi Ushijima, Yokohama, JP;
Atsushi Kandori, Ebina, JP;
Yoshikatsu Ichimura, Setagaya-ku, JP;
Yoshitaka Zaitsu, Kawasaki, JP;
Takashi Ushijima, Yokohama, JP;
Atsushi Kandori, Ebina, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An electric potential measuring apparatus including a substrate disposed facing a measurement object, a detecting electrode provided insulated from the substrate, and a capacity modulating unit for modulating a coupling capacity between the detecting electrode and the measurement object. In the electric potential measuring apparatus, a region with a dielectric constant less than a dielectric constant of the substrate is formed in the substrate to achieve an increase in resistivity of a portion of the substrate between detecting electrodes, or a decrease in a stray capacity between the detecting electrode and the substrate.